Abstract: A scanner includes a reading unit that reads an image of a paper, a medium feeding portion that is capable of selecting a first feeding mode in which a separation feeding for separately feeding a paper bundle in which a plurality of sheets of paper is overlapped with each other is performed and a second feeding mode in which a non-separation feeding for collectively feeding the paper bundle without separating is performed, and a pair of first transporting rollers and a pair of second transporting rollers that transport the paper fed by the medium feeding portion, in a case in which the medium feeding portion feeds the paper in the second feeding mode, a first driven roller and a second driven roller respectively constituting the pair of first transporting rollers and the pair of second transporting rollers are driven in a rotation direction where the paper is transported.

Abstract: In an example printing device may include a tray to receive print media sheets, and a paddle roller to rotate about an axis and move individual print media sheets of the print media sheets to abut an end register of the tray and form a stack of print media sheets, and the paddle roller rotate a first quantity of rotations per print media sheet based in response to a determination that the stack of print media sheets corresponds to a first height.

Abstract: In one example, a media feed system includes a pick arm that is adjustable at a pivot and operable to maintain a distance between a pick roller and a separation wall as the pick arm changes orientation. In another example, a media feed system may include a pick arm, a pick roller coupled to the pick arm, a pivot coupled to the pick arm, and a plate coupled to the pivot via a pin and slot interface. In that example, a slot of the pin and slot interface is to adjust position of the pivot and adjust orientation of the pick arm.

Abstract: A medium feeding apparatus includes a mounting section on which a medium to be fed is mounted, a feeding roller configured to feed the medium mounted on the mounting section, a separation roller configured to nip and separate the medium with the feeding roller therebetween, and a regulation section disposed downstream of the nipping position between the feeding roller and the separation roller, the regulation section being configured to regulate the contact of the medium to be fed and the separation roller by coming into contact with the medium from the side of the separation roller.

Abstract: A sheet feeding roller 101 which feeds a sheet S stacked on a sheet supporting plate 110 capable of being lifted and lowered is swingably supported at a swing end of a sheet feeding roller supporting arm 104 which is arranged swingably in an up-and-down direction and a roller biasing member applies a force to the sheet feeding roller supporting arm in a direction that the sheet feeding roller is pressed to sheets S stacked on a sheet stack tray. A swing fulcrum 104a is arranged in a range between a tangential line of the sheet feeding roller at the upstreammost pressing position against the sheet feeding direction and a tangential line of the sheet feeding roller at the downstreammost pressing position out of pressing positions where the sheet feeding roller is pressed to the sheets as being varied in accordance with a sheet stacking state of the sheets.

Abstract: In a portable small size printer unit 1, when a pickup roller is replaced, user grips a roller main body and slides it resisting a bias force of a spring. Consequently, when the roller main body is slid, the entire length of the pickup roller is shortened, so that a first convex portion is removed from a first concave portion. After that, the front end of a slide shaft member is removed from a shaft mounting portion by tilting the roller main body and then, the pickup roller is removed from the printing mechanism unit. By sliding the slide shaft member outward of the roller main body, the roller main body is taken out of the slide shaft member and the like so as to replace only the roller main body.

Abstract: A retard roller of an automatic document feeder provides a frictional force to separate plural documents from each other. The retard roller can provide a first damping torque and a second damping torque with different directions. The second damping torque is smaller than the first damping torque. As such, the frictional force exerted on the document is reduced for returning the document out of the automatic document feeder. A retard roller module having such a retard roller is also provided.

Abstract: An image forming apparatus includes a medium placing portion on which a medium is placed, a feed roller rotatably provided in contact with the medium placed on the medium placing portion so as to feed the medium, guide members disposed on both sides of the feed roller for guiding the medium being fed. The guide members are movable in a direction substantially perpendicular to a surface of the medium. A biasing unit is provided for biasing the guide members in a direction toward the medium.

Abstract: A retard roller of an automatic document feeder provides a frictional force to separate plural documents from each other. The retard roller can provide a first damping torque and a second damping torque with different directions. The second damping torque is smaller than the first damping torque. As such, the frictional force exerted on the document is reduced for returning the document out of the automatic document feeder. A retard roller module having such a retard roller is also provided.

Abstract: A sheet pick-up device includes a sheet pick-up arm, a driving shaft and a collar. The sheet pick-up arm has a sleeve at the outside surface thereof. The driving shaft is penetrated through the sheet pick-up arm and the sleeve. The collar is sheathed around the driving shaft and includes at least one flexible vane in contact with the inner surface of the sleeve. The height of the flexible vane relative to the outer surface of the collar is greater than the radial distance between the outer surface of the collar and the inner surface of the sleeve.

Abstract: A device for separating battery plates from stacks comprises a lifting device (30) with which vertical stacks (14) are gradually lifted to a plate placer (51). The plate placer (51) lifts the uppermost plate from the stack (14) and places it onto a conveyor belt (60), whose loading end is located underneath the plate placer (51) and which comprises conveying elements (61) that are moved underneath the plate placer (51) after a plate has been lifted from the stack (14). The delivery end of the conveyor belt (60) is situated underneath the loading end of a vacuum conveyor belt (70). The vacuum conveyor belt (70) receives separated plates from the conveyor belt (60) and moves them to devices located downstream.

Abstract: An automated banking machine (10) includes at least one sheet dispensing mechanism (34, 36, 38, 40, 210). Each sheet dispensing mechanism includes a picking member (72, 212). The picking member rotates, and with each rotation causes an end sheet to be picked from a stack (42, 264) of sheets. The picking member (212) includes an arcuate projecting portion (258) that reduces the risk of damage to the leading edge areas of sheets due to opposed picking and stripping forces.

Abstract: Automatic machine (26) for the deposit and withdrawal of cash, assisted by operator, comprising an input port (33) for a bundle of banknotes (36), a separating device (37) for the bundle of banknotes, a validation device (38) for banknotes separated from the bundle, an output port (39) and an input/output opening (41) for a recycling store (52). The machine (26) has a structure of compact dimensions for use in a banking workstation and comprises a third transaction port (43), for instance a reject/unfit port, and a moving mechanism actuatable for transporting the banknotes from the input port (33), and through the validation device (38), to the output port (39), or to the reject/un-fit port (43), and/or to the input/output opening as function of dispensing of the banknotes.

Abstract: A supporting member is swingable about an imaginary swing axis that is parallel to an imaginary rotational axis of a feeding roller. The imaginary swing axis is located above a recording medium accommodated in a recording-medium accommodating section and is located upstream in a feeding direction of the recording medium with respect to the imaginary rotational axis. A first urging member is configured to apply an urging force to the support member in such a manner that the feeding roller contacts the recording medium accommodated in the recording-medium accommodating section. A second urging member is configured to urge an end of the supporting member in a direction that increases the urging force of the first urging member when an angle between a surface of the recording medium and a plane containing both the imaginary rotational axis and the imaginary swing axis is smaller than a predetermined angle.

Abstract: A conveying apparatus for conveying a flexible sheet along a sheet-convey path including a curved portion. The conveying apparatus includes an outer guide which defines an outer portion of the curved portion of the sheet-convey path. The outer guide includes a guide base including a recessed portion; at least one guide roller including a roller body and a pair of shaft portions that are formed integrally with the roller body; and a curved plate having a first curved guide surface which guides the flexible sheet, and including at least one bearing portion which bears the at least one guide roller such that a portion of the roller body projects inward from the first curved guide surface and the roller body is rotatable about axis of the shaft portions. The recessed portion of the guide base holds the curved plate such that the shaft portions of the at least one guide roller extend in a widthwise direction of the sheet-convey path.

Abstract: An image recording apparatus includes an accommodation section, an image recording section, an outer arcuate guide member, an inner arcuate guide member, and a feeding section. Recording media are stacked on the accommodation section. The image recording section forms an image on a recording medium conveyed in a conveyance direction. The outer arcuate guide member connects in a U-shape the accommodation section with the image recording section. The outer arcuate guide member guides the recording medium from a downstream end portion of the accommodation section to an insertion port of the image recording section. The inner arcuate guide member is disposed to be separate from the outer arcuate guide member. A passage is defined between the outer arcuate guide member and the inner arcuate guide member. The passage allows the recording medium to displace in a thickness direction thereof.

Abstract: A paper pick-up unit of an image forming apparatus includes an elliptical pick-up rubber having a first arcuate part and a second arcuate part. The first and second arcuate parts are symmetrical to each other and contact a paper. A pick-up housing supports the pick-up rubber, which are attached around the circumference thereof. A first shaft opening and a second shaft opening are formed opposite to each other in the pick-up housing and are eccentrically disposed with respect to a center of the pick-up housing. A pick-up shaft is engaged with one of the first shaft opening and the second shaft opening of the pick-up housing, and is capable of rotating. The pick-up shaft is engaged with the first shaft opening of the pick-up housing for the first arcuate part of the pick-up rubber to pick up a paper. The pick-up shaft is engaged with the second shaft opening of the pick-up housing for the second arcuate part of the pick-up rubber to pick up a paper.

Abstract: A sheet feeding apparatus comprises a sheet stacking portion for stacking sheets thereon, a sheet feeding rotating member for feeding the sheet stacked on the sheet stacking portion, a stopper for regulating the sheet stacked on the sheet stacking portion, and a rotatable gear adapted to hold the stopper at the regulating position of regulating the sheet stacked on the sheet stacking portion, by engaging with the stopper. In this construction, the engagement of the gear and the stopper is released when the gear is rotated.

Abstract: A printing system sheet feeder apparatus and method is provided. The printing system feeder includes a front nudger roll positioned near the leading edge of the top sheet of a sheet stack and the front nudger roll is capable of advancing the top sheet. In addition, the printing system sheet feeder includes a separation nip aligned with the front nudger roll, the front nudger roll being capable of receiving the top sheet advanced by the front nudger roll and advancing the top sheet in a direction away from the front nudger. A rear nudger roll is positioned near the trailing edge of the top sheet and is capable of advancing the sheet directly below the top sheet while the top sheet is being advanced by the front nudger roll and/or separation nip, thereby increasing the overall sheet feeding rate to the printing system.

Abstract: A feed roller unit comprises: a feed roller that abuts against a topmost sheet of a stack of sheets, and rotates to convey the topmost sheet in a conveyance direction, the feed roller being provided to be displaceable in a direction reverse to the conveyance direction while rolling on the topmost sheet; a driving force transmission unit that transmits a driving force generated by a driving source to the feed roller to rotate the feed roller; and an urging unit that provides an urging force to the feed roller in a direction to suppress the displacement of the feed roller.

Abstract: An automatic document feeder (ADF) having a replaceable friction roller assembly. The ADF includes a housing having a back plate which may be raised and a base pivotalby connected to the back plate, a supporting element disposed on the housing and having a shaft hole, a first engaging structure disposed on the housing, and a friction roller assembly. The friction roller assembly includes a rotating shaft, a friction roller and a first sleeve. The friction roller is fixed to the rotating shaft. The first sleeve is rotatably mounted on the rotating shaft. The first sleeve has a second engaging structure which is engaged with the first engaging structure in order to rotatably and firmly mount the rotating shaft to the housing. The friction roller assembly may be replaced when the second engaging structure and the first engaging structure are disengaged.

Abstract: A feed wheel includes a hub and a discontinuous tread removably fitted about the hub. At leading and trailing ends of the discontinuous tread are mateable non-planar female and male surfaces which interfit with one another and tend to interlock the tread ends together. The tread has locking lugs formed under leading and trailing ends and an intermediate segment of the tread which fit into holes configured and located in the hub complimentarily to the locking lugs. The holes and locking lugs are oriented relative to one another so as to enable the tread to be retained about the hub with the tread ends interlocked together during operation of the feed wheel.

Abstract: An apparatus to feed paper in an image forming device, which picks up papers with various thickness received in the feeding stand without a feeding error, and transfers the same to the developing unit. The apparatus includes, a feeding stand to receive a plurality of papers, and having a separating guide inclined at a predetermined angle with which the front end of the paper makes contact with; a main pickup roller that makes contact with the paper on the uppermost layer in the upper part of the feeding stand to pick up the paper towards the separating guide using frictional force generated via rotational contact with the paper; and an auxiliary pickup roller positioned between the main pickup roller and the separating guide to apply a predetermined pressure to the paper upon picking up of the paper by the main pickup roller.

Abstract: The present invention provides an automatic paper feed apparatus which can reliably prevent papers from being discharged in an overlapped state in spite of simple construction. The automatic paper feed apparatus comprises a paper feed roller for automatically feeding a plurality of papers in order from an uppermost one, with the plurality of papers being contained in a cassette in a stacked state. A holding member having flexibility is provided so that the holding member comes into contact with the uppermost paper to generate a friction force that is weaker than that between the paper feed roller and the uppermost paper.

Abstract: The illustrated embodiment comprises a media bias assembly for use in a hardcopy device. A driven pick roll delivers media from a stack of media to a media feed path in the hardcopy device. Media is contained in an input tray and the pick roll is mounted on one side of the centerline through the tray. A passive media bias arm having a media contacting surface on one end is configured for making contact with media contained in the input tray and is spaced apart from the pick roll on the opposite side of the centerline.

Abstract: A printing device including a feed roller assembly, a separation pad located adjacent to the feed roller assembly, and a printer housing having an access plate. The separation pad is user-accessible when the access plate is opened.

Abstract: The paper feeder of the present invention includes paper supply cassettes to house sheets of paper; friction paper pickup rollers to take out sheets of paper one by one by contacting a paper placed at the top of paper in the paper supply cassettes; openings formed on the paper supply cassettes to pass the air to the side of the paper at the downstream position from the friction pickup rollers; and air blowing mechanisms to blow the air into the openings. This paper feeder is used for supplying paper for an image forming apparatus.

Abstract: A product metering napkin dispenser includes a housing defining a storage magazine for receiving a stack of folded napkins and a metering member that penetrates the stack in order to segregate a predetermined number of napkins from the remainder of the stack for dispensing. Preferred embodiments include gravity feed napkin dispensers. In various embodiments the metering member may include: a pivoting plate cooperating with a hinged trap door support surface; a rotating semicircular disk co-rotating with a support disk; or a reciprocating jaw assembly urging napkins through an aperture.

Abstract: A feed device for stacks of paper or plastic material has at least one transport unit with a supporting member for the stack and at least one transport element. A separating unit with at least one rotatably driven feed drum is provided for removing individual sheets from the stack. The transport unit transports the stack to the separating unit and is pretensioned in the transport direction toward the feed drum such that the stack rests with pretension against the feed drum. The pretension can be provided by a spring acting on the transport unit.

Abstract: The illustrated embodiment comprises a media bias assembly for use in a hardcopy device. A driven pick roll delivers media from a stack of media to a media feed path in the hardcopy device. Media is contained in an input tray and the pick roll is mounted on one side of the centerline through the tray. A passive media bias arm having a media contacting surface on one end is configured for making contact with media contained in the input tray and is spaced apart from the pick roll on the opposite side of the centerline.

Abstract: An ATM includes a currency note dispenser having a currency cassette, a note picker, a note transporter, and a note presenter. A cassette tambour door automatically opens during insertion of the cassette into the dispenser. The picker can pick notes through the opening. A spring loaded housing wall tab retains the picker shaft in mating connection with a drive pin. The transporter can move notes vertically and horizontally. The transporter includes belts between an idle shaft and a drive shaft. The idle shaft is vertically movable relative to a drive shaft to maintain belt tension. The transporter also includes convexly tapered rollers that automatically recenter a loose belt. A presenter gate is at a note dispensing outlet of the ATM. The gate is opened by actuating a lever linked with an arm connected to the gate. The gate opens by moving a pin upward in an angled slot.

Abstract: A sheet feeder includes a cassette for containing a plurality of stacked sheets, a holding member for holding sheets from above, a pickup roller which contacts the uppermost sheet from above during one rotation, thereby feeding and transporting the uppermost sheet, a rotatable subsidiary holding member which is rotated in synchronization with a rotation of the pickup roller and in the same rotating direction as the pickup roller, and contacts and holds the sheets from above during each rotation before the pickup roller contacts the uppermost sheet. The distance between a rotation axis and that surface of the rotatable subsidiary holding member which contacts the uppermost sheet is equal to, or greater than the distance between a rotation axis and that surface of the pickup roller which contacts the sheet.

Abstract: A paper feeder of the present invention includes a paper tray for supporting paper and pickup rollers in total width more than 40% of the maximum paper width supportable by a paper tray for taking out a paper at the top position in a specified direction. This paper feeder is used for paper feeding of image forming apparatuses.

Abstract: A dispenser for dispensing flexible media such as cut sheets (1) from a stack has a rotatable separating member (4) which engages and reverse buckles one end of the top sheet (2) so that that end is lifted away from the stack and positioned between transport rollers (9, 10). The transport rollers (9, 10) are driven independently from the separating member (4) so that multiple sheets may be separated from the stack before being transported. The frictional engagement between the separating member (4) and the stack varies as the separating member rotates, so that only one sheet is separated with each rotation. The center of the top sheet (2) is held against the stack by a holding member (3) so that the top sheet buckles only over part of its length.

Abstract: Method and apparatus for peeling a carrier web having a protective layer from a keeper sheet of image-bearing medium. The carrier web and the protective layer are peeled about a peel member as the keeper sheet moves over and is deformed by a constraining roller located at or downstream of the peel member putting the protective layer in tension. Preferably, at least one of the peel member or the constraining roller has a compliant material covering to facilitate separation of unused portions of the protective layer from edges of the keeper.

Abstract: A method for dismantling a stack (1) of flat objects (2, 3) piece by piece, in which the top object (2) of the stack (1) is moved in its plane, gripped at its freed edge and removed from the stack (1). The top object (2) is moved against a stop (5), at least in the region of one of its corners (2b), by a movable separating element (6, 6′) and, as a result of further movement, is bent in such a way that it escapes from the stop (5) and is moved out of the stack (1). The invention further relates to an apparatus for dismantling a stack (1) of flat objects (2, 3) piece by piece.

Abstract: A document feeding system is disclosed in this present invention. The document feeding system according to this invention can improve the document transfer by employing a carrying device with multiple rotating speeds. Thus the mistakes during the document transfer, such as terminating the document transfer, destroying the document, can be prevented by the above-mentioned document feeding system. Moreover, because an accurate calculation in the disposition of elements in the document feeding system is not necessary, the manufacturing of the above-mentioned document feeding system is simpler than the manufacturing of the document feeding system in the prior art. Hence, this invention can not only improve the efficiency of a document transfer, but also simplify the manufacturing process of a document feeding system.

Abstract: A sheet feeder includes a sheet mounting plate, pick-up roller, drive motor and transmission device to prevent an excessive load from being applied to a pick-up roller when no sheets are mounted on a sheet mounting plate. When the sheets on the sheet mounting plate run out, a sheet detecting actuator of the sheet feeder fits into an opening formed on the sheet mounting plate. Accordingly, a protrusion of a drive actuator slides along a groove formed on the sheet detecting actuator, which causes the drive actuator and a drive interrupting boss to move. With this structure, transmission of drive force to the pick-up roller is interrupted.

Abstract: According to the present invention, a paper sheet managing device is provided. The sheet managing device includes a storage part for storing paper sheets and sheet supply means for supplying a paper sheet from the storage part. The sheet supply means comprises a pick up roller extending in a sheet width direction orthogonal to a sheet feeding direction, a drive shaft extending parallel to the pick up roller and rotationally driving the pick up roller and a plurality of power transmitting means for transmitting a power from the drive shaft to the pick up roller. The plurality of power transmitting means is disposed at at least both ends of the pick up roller and each of the plurality of power transmitting means comprises a gear train that links the drive shaft and the pick up roller and an arm that oscillates the pick up roller. The driving shaft includes processing that prevents rotational phase shifts.

Abstract: A paper feeding device for a printer. The device includes a paper feeding cassette to load a plurality of paper sheets, and a driving power source. A driving gear is driven by the driving power source, and a passive gear rotates interlockingly with the driving gear. A first link is provided, with one end pivotally installed on a rotation shaft of the driving gear, and another end coupled to a rotation shaft of the passive gear. A pickup gear rotates interlockingly with the passive gear, and a second link is provided, with one end rotatably installed on the rotation shaft of the passive gear, and with another end coupled to a rotation shaft of the pickup gear. A pickup roller is coaxially coupled to the pickup gear, to simultaneously rotate and press the paper so as to feed the paper sheets one by one into the printer body. A supporting arm is provided, with a first end coupled to a rotation shaft of the pickup roller, and a second end pivotally installed on a side of the printer body.

Abstract: A sheet feeder includes a cassette for containing a plurality of stacked sheets, a holding member for holding sheets from above, a pickup roller which contacts the uppermost sheet from above during one rotation, thereby feeding and transporting the uppermost sheet, a rotatable subsidiary holding member which is rotated in synchronization with a rotation of the pickup roller and in the same rotating direction as the pickup roller, and contacts and holds the sheets from above during each rotation before the pickup roller contacts the uppermost sheet. The distance between a rotation axis and that surface of the rotatable subsidiary holding member which contacts the uppermost sheet is equal to, or greater than the distance between a rotation axis and that surface of the pickup roller which contacts the sheet.

Abstract: A self-adaptive sheet feeding roll for reliably feeding, within a sheet feeding apparatus, sheets of various and different sheet weights along a sheet path. The self-adaptive sheet feeding roll includes (a) a cylindrical core having a longitudinal axis and an outer surface; (b) a compliant surface layer formed over the outer surface of the cylindrical core and having an external surface and a given layer thickness; and (c) a series of spaced apart, non-radial slots formed from the external surface into the compliant surface layer and defining a series of spaced apart blade portions within the compliant surface layer for adaptively compressing and deforming against, and responsively to, sheets of various and different sheet weights, thereby self-adjusting a normal force Fn as well as a sheet driving force Fd thereof and enabling reliable feeding, within a sheet feeding apparatus, of such sheets of various and different sheet weights.

Abstract: A product metering napkin dispenser includes a housing defining a storage magazine for receiving a stack of folded napkins and a metering member that penetrates the stack in order to segregate a predetermined number of napkins from the remainder of the stack for dispensing. Preferred embodiments include gravity feed napkin dispensers. In various embodiments the metering member may include: a pivoting plate cooperating with a hinged trap door support surface; a rotating semicircular disk co-rotating with a support disk; or a reciprocating jaw assembly urging napkins through an aperture.

Abstract: Resilient supporting member for resiliently supporting the lower edge of recording paper sheets is provided near a lower part of a back plate of a paper sheet feeding apparatus. The resilient supporting member includes a rocking support piece and a spring. When the recording paper sheets are inserted into the paper sheet feeding apparatus, the rocking support piece is angularly displaced about an axis extending perpendicularly to the paper sheet feeding direction and absorbs the impact force generated in inserting the recording paper sheets, whereby the rocking support piece is pressed against a predetermined holding portion by an upwardly directed spring force and the angle that the receiving face of the rocking support piece makes with the supporting face of the back plate is held at an angle &thgr;1 suitable for paper sheet feeding.

Abstract: A self-adaptive sheet feeding roll for reliably feeding, within a sheet feeding apparatus, sheets of various and different sheet weights along a sheet path. The self-adaptive sheet feeding roll includes (a) a cylindrical core having a longitudinal axis and an outer surface; (b) a compliant surface layer formed over the outer surface of the cylindrical core and having an external surface and a given layer thickness; and (c) a series of spaced apart, non-radial slots formed from the external surface into the compliant surface layer and defining a series of spaced apart blade portions within the compliant surface layer for adaptively compressing and deforming against, and responsively to, sheets of various and different sheet weights, thereby self-adjusting a normal force Fn as well as a sheet driving force Fd thereof and enabling reliable feeding, within a sheet feeding apparatus, of such sheets of various and different sheet weights.

Abstract: A sheet feeder includes a cassette for containing a plurality of stacked sheets, a holding member for holding sheets from above, a pickup roller which contacts the uppermost sheet from above during one rotation, thereby feeding and transporting the uppermost sheet, a rotatable subsidiary holding member which is rotated in synchronization with a rotation of the pickup roller and in the same rotating direction as the pickup roller, and contacts and holds the sheets from above during each rotation before the pickup roller contacts the uppermost sheet. The distance between a rotation axis and that surface of the rotatable subsidiary holding member which contacts the uppermost sheet is equal to, or greater than the distance between a rotation axis and that surface of the pickup roller which contacts the sheet.

Abstract: A non-planar single sheet separator wall preferably inclined at about 25° from the vertical away from a paper stack first engages the side corners of the leading edge of a sheet of paper or other media picked from the top of the generally horizontal or downwardly inclined stack by a roller or pusher and causes the corners of the sheet to first curl upwardly along the wall before the central portion of the leading edge of the sheet engages the central portion of the separator wall. The separator wall configuration substantially eliminates downward curling of one or both leading corners of a sheet which is purposely upwardly bowed by an elastomeric pad near the center of the separator wall to reduce multi-sheet picks and separator jams.

Abstract: A paper pickup apparatus in a printer for pivotally moving by a motor includes a driving shaft rotated by the motor, a first pickup housing having at least one first transmission gear and first and second end portions, the first end portion mounted to the driving shaft, the first transmission gear transmitting torque from the driving shaft, a second pickup housing having at least one second transmission gear and being rotatably mounted to the second end portion of the first pickup housing, the second transmission gear transmitting torque from the first pickup housing, a connecting portion for connecting the first and second pickup housing with each other, the first pickup housing being rotatable to the second pickup housing centering thereon, and a pickup roller mounted to the second pickup housing and rotated by torque from the second transmission gear.

Abstract: A replaceable roller bogie for a single sheet feeder includes pre-feed and separation rollers mounted on a frame which also has a frame positioning lever thereon. Roller drive gears are mounted between spaced plates on the frame and include a pre-feed roller clutch gear with elastomeric teeth which is mounted in slots on the frame which limit motion travel of the clutch gear to prevent over engagement of gear teeth on the clutch gear with gear teeth on the pre-feed roller drive gear. The replaceable bogie is pivotally supported on the sheet feeder and held in place by a manually operable release and latch mechanism.

Abstract: Over engagement protection of roller drive gears on a single sheet feeder roller assembly, which may comprise a replaceable roller bogie, is provided by a clutch gear which drives a pre-feed roller, the clutch gear being mounted in a roller support frame which includes spaced elongate, preferably arcuate, slots which limit gear travel toward the pre-feed roller when the roller is driven in a forward direction and which disengages the gears when the input power is reversed. The clutch gear is provided with elastomeric teeth for noise reduction and the roller assembly also includes a separation roller which is over driven relative to the surface speed of the pre-feed roller.